1 :mod:`SimpleXMLRPCServer` --- Basic XML-RPC server
2 ==================================================
4 .. module:: SimpleXMLRPCServer
5 :synopsis: Basic XML-RPC server implementation.
6 .. moduleauthor:: Brian Quinlan <brianq@activestate.com>
7 .. sectionauthor:: Fred L. Drake, Jr. <fdrake@acm.org>
10 The :mod:`SimpleXMLRPCServer` module has been merged into
11 :mod:`xmlrpc.server` in Python 3.0. The :term:`2to3` tool will automatically
12 adapt imports when converting your sources to 3.0.
17 The :mod:`SimpleXMLRPCServer` module provides a basic server framework for
18 XML-RPC servers written in Python. Servers can either be free standing, using
19 :class:`SimpleXMLRPCServer`, or embedded in a CGI environment, using
20 :class:`CGIXMLRPCRequestHandler`.
23 .. class:: SimpleXMLRPCServer(addr[, requestHandler[, logRequests[, allow_none[, encoding]]]])
25 Create a new server instance. This class provides methods for registration of
26 functions that can be called by the XML-RPC protocol. The *requestHandler*
27 parameter should be a factory for request handler instances; it defaults to
28 :class:`SimpleXMLRPCRequestHandler`. The *addr* and *requestHandler* parameters
29 are passed to the :class:`SocketServer.TCPServer` constructor. If *logRequests*
30 is true (the default), requests will be logged; setting this parameter to false
31 will turn off logging. The *allow_none* and *encoding* parameters are passed
32 on to :mod:`xmlrpclib` and control the XML-RPC responses that will be returned
33 from the server. The *bind_and_activate* parameter controls whether
34 :meth:`server_bind` and :meth:`server_activate` are called immediately by the
35 constructor; it defaults to true. Setting it to false allows code to manipulate
36 the *allow_reuse_address* class variable before the address is bound.
38 .. versionchanged:: 2.5
39 The *allow_none* and *encoding* parameters were added.
41 .. versionchanged:: 2.6
42 The *bind_and_activate* parameter was added.
45 .. class:: CGIXMLRPCRequestHandler([allow_none[, encoding]])
47 Create a new instance to handle XML-RPC requests in a CGI environment. The
48 *allow_none* and *encoding* parameters are passed on to :mod:`xmlrpclib` and
49 control the XML-RPC responses that will be returned from the server.
53 .. versionchanged:: 2.5
54 The *allow_none* and *encoding* parameters were added.
57 .. class:: SimpleXMLRPCRequestHandler()
59 Create a new request handler instance. This request handler supports ``POST``
60 requests and modifies logging so that the *logRequests* parameter to the
61 :class:`SimpleXMLRPCServer` constructor parameter is honored.
64 .. _simple-xmlrpc-servers:
66 SimpleXMLRPCServer Objects
67 --------------------------
69 The :class:`SimpleXMLRPCServer` class is based on
70 :class:`SocketServer.TCPServer` and provides a means of creating simple, stand
71 alone XML-RPC servers.
74 .. method:: SimpleXMLRPCServer.register_function(function[, name])
76 Register a function that can respond to XML-RPC requests. If *name* is given,
77 it will be the method name associated with *function*, otherwise
78 ``function.__name__`` will be used. *name* can be either a normal or Unicode
79 string, and may contain characters not legal in Python identifiers, including
83 .. method:: SimpleXMLRPCServer.register_instance(instance[, allow_dotted_names])
85 Register an object which is used to expose method names which have not been
86 registered using :meth:`register_function`. If *instance* contains a
87 :meth:`_dispatch` method, it is called with the requested method name and the
88 parameters from the request. Its API is ``def _dispatch(self, method, params)``
89 (note that *params* does not represent a variable argument list). If it calls
90 an underlying function to perform its task, that function is called as
91 ``func(*params)``, expanding the parameter list. The return value from
92 :meth:`_dispatch` is returned to the client as the result. If *instance* does
93 not have a :meth:`_dispatch` method, it is searched for an attribute matching
94 the name of the requested method.
96 If the optional *allow_dotted_names* argument is true and the instance does not
97 have a :meth:`_dispatch` method, then if the requested method name contains
98 periods, each component of the method name is searched for individually, with
99 the effect that a simple hierarchical search is performed. The value found from
100 this search is then called with the parameters from the request, and the return
101 value is passed back to the client.
105 Enabling the *allow_dotted_names* option allows intruders to access your
106 module's global variables and may allow intruders to execute arbitrary code on
107 your machine. Only use this option on a secure, closed network.
109 .. versionchanged:: 2.3.5, 2.4.1
110 *allow_dotted_names* was added to plug a security hole; prior versions are
114 .. method:: SimpleXMLRPCServer.register_introspection_functions()
116 Registers the XML-RPC introspection functions ``system.listMethods``,
117 ``system.methodHelp`` and ``system.methodSignature``.
119 .. versionadded:: 2.3
122 .. method:: SimpleXMLRPCServer.register_multicall_functions()
124 Registers the XML-RPC multicall function system.multicall.
127 .. attribute:: SimpleXMLRPCRequestHandler.rpc_paths
129 An attribute value that must be a tuple listing valid path portions of the URL
130 for receiving XML-RPC requests. Requests posted to other paths will result in a
131 404 "no such page" HTTP error. If this tuple is empty, all paths will be
132 considered valid. The default value is ``('/', '/RPC2')``.
134 .. versionadded:: 2.5
136 .. _simplexmlrpcserver-example:
138 SimpleXMLRPCServer Example
139 ^^^^^^^^^^^^^^^^^^^^^^^^^^
142 from SimpleXMLRPCServer import SimpleXMLRPCServer
143 from SimpleXMLRPCServer import SimpleXMLRPCRequestHandler
145 # Restrict to a particular path.
146 class RequestHandler(SimpleXMLRPCRequestHandler):
147 rpc_paths = ('/RPC2',)
150 server = SimpleXMLRPCServer(("localhost", 8000),
151 requestHandler=RequestHandler)
152 server.register_introspection_functions()
154 # Register pow() function; this will use the value of
155 # pow.__name__ as the name, which is just 'pow'.
156 server.register_function(pow)
158 # Register a function under a different name
159 def adder_function(x,y):
161 server.register_function(adder_function, 'add')
163 # Register an instance; all the methods of the instance are
164 # published as XML-RPC methods (in this case, just 'div').
169 server.register_instance(MyFuncs())
171 # Run the server's main loop
172 server.serve_forever()
174 The following client code will call the methods made available by the preceding
179 s = xmlrpclib.ServerProxy('http://localhost:8000')
180 print s.pow(2,3) # Returns 2**3 = 8
181 print s.add(2,3) # Returns 5
182 print s.div(5,2) # Returns 5//2 = 2
184 # Print list of available methods
185 print s.system.listMethods()
188 CGIXMLRPCRequestHandler
189 -----------------------
191 The :class:`CGIXMLRPCRequestHandler` class can be used to handle XML-RPC
192 requests sent to Python CGI scripts.
195 .. method:: CGIXMLRPCRequestHandler.register_function(function[, name])
197 Register a function that can respond to XML-RPC requests. If *name* is given,
198 it will be the method name associated with function, otherwise
199 *function.__name__* will be used. *name* can be either a normal or Unicode
200 string, and may contain characters not legal in Python identifiers, including
201 the period character.
204 .. method:: CGIXMLRPCRequestHandler.register_instance(instance)
206 Register an object which is used to expose method names which have not been
207 registered using :meth:`register_function`. If instance contains a
208 :meth:`_dispatch` method, it is called with the requested method name and the
209 parameters from the request; the return value is returned to the client as the
210 result. If instance does not have a :meth:`_dispatch` method, it is searched
211 for an attribute matching the name of the requested method; if the requested
212 method name contains periods, each component of the method name is searched for
213 individually, with the effect that a simple hierarchical search is performed.
214 The value found from this search is then called with the parameters from the
215 request, and the return value is passed back to the client.
218 .. method:: CGIXMLRPCRequestHandler.register_introspection_functions()
220 Register the XML-RPC introspection functions ``system.listMethods``,
221 ``system.methodHelp`` and ``system.methodSignature``.
224 .. method:: CGIXMLRPCRequestHandler.register_multicall_functions()
226 Register the XML-RPC multicall function ``system.multicall``.
229 .. method:: CGIXMLRPCRequestHandler.handle_request([request_text = None])
231 Handle a XML-RPC request. If *request_text* is given, it should be the POST
232 data provided by the HTTP server, otherwise the contents of stdin will be used.
237 def div(self, x, y) : return x // y
240 handler = CGIXMLRPCRequestHandler()
241 handler.register_function(pow)
242 handler.register_function(lambda x,y: x+y, 'add')
243 handler.register_introspection_functions()
244 handler.register_instance(MyFuncs())
245 handler.handle_request()